I Am A 60 Yr Old Woman That Has Always

I am a 60 yr old woman that has always been active, and in very good shape all of my adult life teaching group exercise. The last two years I have been in school to become a radiology technologist. The amount of studying and varied clinical hours has deterred me from my regular activities like cycling and strength training. I have chronic lower back pain and I am returning to finish school and clinical from winter break. Please give me some tips to relieve my chronic pain.